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vulkan/overlay: Add fps counter

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Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109747
This commit is contained in:
Matthias Lorenz 2019-02-23 00:08:28 +01:00 • committed by Lionel Landwerlin
parent 239b0d8570
commit f91654120b
1 changed files with 17 additions and 0 deletions
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17
src/vulkan/overlay-layer/overlay.cpp
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@ -201,6 +201,10 @@ struct swapchain_data {
uint64_t n_frames;
uint64_t last_present_time;
unsigned n_frames_since_update;
uint64_t last_fps_update;
double fps;
double frame_times[200];
double acquire_times[200];
@ -401,12 +405,24 @@ static void snapshot_swapchain_frame(struct swapchain_data *data)
((double)now - (double)data->last_present_time) / 1000.0;
}
if (data->last_fps_update) {
double elapsed = (double)(now - data->last_fps_update);
if (elapsed >= 500000.0) {
data->fps = ((uint64_t)data->n_frames_since_update * 1000000 / elapsed);
data->n_frames_since_update = 0;
data->last_fps_update = now;
}
} else {
data->last_fps_update = now;
}
struct device_data *device_data = data->device;
data->stats[data->n_frames % ARRAY_SIZE(data->frame_times)] = device_data->stats;
memset(&device_data->stats, 0, sizeof(device_data->stats));
data->last_present_time = now;
data->n_frames++;
data->n_frames_since_update++;
}
static float get_frame_timing(void *_data, int _idx)
@ -491,6 +507,7 @@ static void compute_swapchain_display(struct swapchain_data *data)
format_name = format_name ? (format_name + strlen("VK_FORMAT_")) : "unknown";
ImGui::Text("Swapchain format: %s", format_name);
ImGui::Text("Frames: %" PRIu64, data->n_frames);
ImGui::Text("FPS: %.2f" , data->fps);
{
double min_time = FLT_MAX, max_time = 0.0f;